CVE-2023-53297
Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp conn->chan_lock isn't acquired before l2cap_get_chan_by_scid, if l2cap_get_chan_by_scid returns NULL, then 'bad unlock balance' is triggered.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 16, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
f2d38e77aa5f3effc143e7dd24da8acf02925958 < 5f352a56f0e607e6ff539cbf12156bfd8af232be 1351551aa9058e07a20a27a158270cf84fcde621 < 6a27762340ad08643de3bc17fe1646ea489ca2e2 c02421992505c95c7f3c9ad59ee35e22eac60988 < 2112c4c47d36bc5aba3ddeb9afedce6ae6a67e7d d9ba36c22a7bb09d6bac4cc2f243eff05da53f43 < 55410a9144c76ecda126e6cdec556dfcd8f343b2 ac6725a634f7e8c0330610a8527f20c730b61115 < 116b9c002c894097adc2b8684db2d1da4229ed46 348d446762e7c70778df8bafbdf3fa0df2123f58 < fd269a0435f8e9943b7a57c5a59688848d42d449 a2a9339e1c9deb7e1e079e12e27a0265aea8421a < 5134556c9be582793f30695c09d18a26fe1ff2d7 a2a9339e1c9deb7e1e079e12e27a0265aea8421a < 25e97f7b1866e6b8503be349eeea44bb52d661ce d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284
Linux / Linux
6.3
References
git.kernel.org: https://git.kernel.org/stable/c/5f352a56f0e607e6ff539cbf12156bfd8af232be git.kernel.org: https://git.kernel.org/stable/c/6a27762340ad08643de3bc17fe1646ea489ca2e2 git.kernel.org: https://git.kernel.org/stable/c/2112c4c47d36bc5aba3ddeb9afedce6ae6a67e7d git.kernel.org: https://git.kernel.org/stable/c/55410a9144c76ecda126e6cdec556dfcd8f343b2 git.kernel.org: https://git.kernel.org/stable/c/116b9c002c894097adc2b8684db2d1da4229ed46 git.kernel.org: https://git.kernel.org/stable/c/fd269a0435f8e9943b7a57c5a59688848d42d449 git.kernel.org: https://git.kernel.org/stable/c/5134556c9be582793f30695c09d18a26fe1ff2d7 git.kernel.org: https://git.kernel.org/stable/c/25e97f7b1866e6b8503be349eeea44bb52d661ce